15
$200 Question from H2 An airplane leaves New York to fly to Los Angeles. It travels 3,506 km in 5.5 hours. What is the average speed of the airplane?

16
$200 Answer from H km/hr

17
$300 Question from H2 A baby crawls at a speed of 8 feet/minute for a distance of 45 feet. How much time does it take him to travel this distance?

18
$300 Answer from H minutes

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$400 Question from H2 James runs every morning from 5:00 AM until 8:30 AM. If he runs at a constant speed of 4.8 mi/hr, what distance does he cover ?

20
$400 Answer from H miles

21
$500 Question from H2 What is the average speed for this entire trip?

22
$500 Answer from H2.875 km/hr

23
$100 Question from H3 You are traveling in a car that is moving at a velocity of 20 m/s. Suddenly, a car 10 meters in front of you slams on it’s brakes. At that moment, you also slam on your brakes and slow to 5 m/s. Does this represent positive or negative acceleration?

24
$100 Answer from H3 Negative

25
$200 Question from H3 A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?

26
$200 Answer from H3 6 m/s/s

27
$300 Question from H3 A cyclist speeds up from rest to 24 m/s in 9 seconds. What is his acceleration?

28
$300 Answer from H m/s/s

29
$400 Question from H3 A sprinter is running at a speed of 18m/s and slows to a stop in 8 seconds. What is the acceleration?

30
$400 Answer from H m/s/s

31
$500 Question from H3 Julia is in a car with her father. The car is undergoing centripetal acceleration. What is happening to the car? A.The car is changing direction at a constant speed. B.The car is changing direction and speeding up. C.The car is stopping suddenly. D.The car is slowing down.

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$500 Answer from H3 A

33
$100 Question from H4 56 N92N What is the net force of the diagram above?

34
$100 Answer from H4 36 N right

35
$200 Question from H4 According to Newton’s 2 nd Law of motion if you increase the mass of an object you will decrease its __________________.

36
$200 Answer from H4 Acceleration

37
$300 Question from H4 A 1600 kg car accelerated at a rate of 6.0 m/s 2. How much force is the car’s engine producing? Use F=MA

38
$300 Answer from H4 9,600 N

39
$400 Question from H4 John pushes a 45 kg box with a force of 425 N. What is the acceleration of the box? Use F=MA

40
$400 Answer from H m/s/s

41
$500 Question from H4 If the net force is 14 N up, what is the value of B? 16N B 34 N 12N

42
$500 Answer from H4 B = 8N

43
$100 Question from H5 Which law of motion states, “An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an unbalanced force?”

44
$100 Answer from H5 His 1 st law

45
$200 Question from H5 A woman pushes a stalled car. The woman pushes with a force of 135N. What is the mass of the car if the car accelerates at 3 m/s 2 ? SHOW ALL WORK.